is a fibrogranulomatous lesion that develops secondary to a foreign body reaction to cholesterol crystals and exhibits the accumulation of foreign body giant cells.
Presence of cholesterol granuloma
in the maxillary and ethmoid sinuses.
We report on 2 patients with petrous apex cholesterol granulomas
who presented to the Division of Otolargynology and were treated at the UCT Private Academic Hospital, Cape Town.
Thus, cholesterol granuloma
is a foreign-body reaction to Cholesterol Granuloma
of Maxillary Sinus--Leon et al 217 the presence of cholesterol crystals formed during the inflammatory process.
The differential diagnosis of a cholesterol granuloma
includes cholesteatoma, mucocele, chondroma, chondrosarcoma, metastatic carcinoma, dermoid, giant-cell tumor, and cavernous hemangioma.
This article describes the presentation of a cholesterol granuloma
in a patient with a paraganglioma, or glomus jugulare tumor.
This case is interesting because the MRI characteristics of both the cholesteatoma and the cholesterol granuloma
could be visualized in the same image.
Several different factors can cause the tympanic membrane to assume a blue color, including a true hemotympanum, an idiopathic hemotympanum secondary to a cholesterol granuloma
, long-standing secretory otitis media, a dehiscent high-riding jugular bulb, and occasionally a chemodectoma.
Patients 1 and 2 exhibited compression and erosion of the endolymphatic sac and duct by a jugular megabulb and a cholesterol granuloma
This in turn can lead to various clinical processes, such as the development of a mucocele, cholesterol granuloma
, and apical petrositis; on the other hand, petrous apex effusion is sometimes an incidental finding of no clinical significance.
The differential diagnosis includes blue eardrum and cholesterol granuloma
The outer part of the mass was hyperintense on T1- and T2-weighted MRI, which is a sign of cholesterol granuloma